Stop lie to get sales

Hi, I have been a loyal customer for years with telkom, I'm trying to cancel my upgrade, because of the service I'm getting, they send me a home device for data with a SIM, but never told me that I have to do sim swap, the sales lady said, if I put my old SIM in the device I will get my data, but I have no signal, called on Friday, and they said I should wait for 72 business hours, I did wait, today I have been calling to find out what is happening, because I still don't have signal, and they said I have to buy a new SIM and do a SIM swap, and to cancel is also a problem, and it is sad because I never had any problems with telkom, so I have to pay for something that no-one explain to me what to do, and I am far away from anything....so this is how you do sales now, lie to us for sales, please I never used the device and please just cancel everything regarding this home internet because you called me for upgrade and you **** to me